Kb Performance
KB Performance Hypereutectic Piston Kit 3.498" +0.040" 8.3:1 CR 4.250" Stroke 80" Big Twin - KB297.040 For Harley Motorcycles 1978-1984
MPN:
KB297.040
SKU:
DS-751263
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Kb Performance
KB Performance Hypereutectic Piston Kit 3.498" +0.040" 8.3:1 CR 4.250" Stroke 80" Big Twin - KB297.040 For Harley Motorcycles 1978-1984
MPN:
KB297.040
SKU:
DS-751263
SKU:
DS-751263
Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy
Allow a tighter fit and longer piston and ring life
Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to piston
Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
Replacement piston rings and pin lock rings available separately
KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.
Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
Specs
Units
Kit
Riding Style
Street
Product Name
Piston Kit
Bore Size
3.498"
Compression Ratio
8.3:1
Bore Oversize
+0.040"
Piston Material
Hypereutectic Alloy
1978-1984
Harley-Davidson
Electra Glide FLH
1979-1980
Harley-Davidson
1200 Electra Glide FLH
1979-1981
Harley-Davidson
1200 Fat Bob FXEF
1979-1982
Harley-Davidson
Low Rider FXS
1979-1980
Harley-Davidson
Super Glide 80 FXE
1980-1982
Harley-Davidson
Electra Glide Sport FLHS
1980-1982
Harley-Davidson
Sturgis FXB
1980-1983
Harley-Davidson
Tour Glide Classic FLTC
1980-1983
Harley-Davidson
Tour Glide FLT
1980-1984
Harley-Davidson
Wide Glide FXWG
1981-1982
Harley-Davidson
Electra Glide Classic FLH
1981
Harley-Davidson
Electra Glide Heritage FLH
1981-1984
Harley-Davidson
Super Glide FXE
1982-1983
Harley-Davidson
Super Glide II FXR
1982-1983
Harley-Davidson
Super Glide II FXRS
1983
Harley-Davidson
Disc Glide FXDG
1983
Harley-Davidson
Electra Glide Classic FLHTC
1983
Harley-Davidson
Electra Glide Standard FLHT
1983-1984
Harley-Davidson
Low Rider FXSB
1983
Harley-Davidson
Sport Glide FXRT
1984
Harley-Davidson
Electra Glide Special FLHX
Fitment DisclosureThis quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Regular price
$246.95
Unit price
Shipping calculated at checkout.
Product Details
Features
- Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy
- Allow a tighter fit and longer piston and ring life
- Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to piston
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Replacement piston rings and pin lock rings available separately
- KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.
- Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
Specs
| Units | Kit |
| Riding Style | Street |
| Product Name | Piston Kit |
| Bore Size | 3.498" |
| Compression Ratio | 8.3:1 |
| Bore Oversize | +0.040" |
| Piston Material | Hypereutectic Alloy |
| 1978-1984 | Harley-Davidson | Electra Glide FLH |
| 1979-1980 | Harley-Davidson | 1200 Electra Glide FLH |
| 1979-1981 | Harley-Davidson | 1200 Fat Bob FXEF |
| 1979-1982 | Harley-Davidson | Low Rider FXS |
| 1979-1980 | Harley-Davidson | Super Glide 80 FXE |
| 1980-1982 | Harley-Davidson | Electra Glide Sport FLHS |
| 1980-1982 | Harley-Davidson | Sturgis FXB |
| 1980-1983 | Harley-Davidson | Tour Glide Classic FLTC |
| 1980-1983 | Harley-Davidson | Tour Glide FLT |
| 1980-1984 | Harley-Davidson | Wide Glide FXWG |
| 1981-1982 | Harley-Davidson | Electra Glide Classic FLH |
| 1981 | Harley-Davidson | Electra Glide Heritage FLH |
| 1981-1984 | Harley-Davidson | Super Glide FXE |
| 1982-1983 | Harley-Davidson | Super Glide II FXR |
| 1982-1983 | Harley-Davidson | Super Glide II FXRS |
| 1983 | Harley-Davidson | Disc Glide FXDG |
| 1983 | Harley-Davidson | Electra Glide Classic FLHTC |
| 1983 | Harley-Davidson | Electra Glide Standard FLHT |
| 1983-1984 | Harley-Davidson | Low Rider FXSB |
| 1983 | Harley-Davidson | Sport Glide FXRT |
| 1984 | Harley-Davidson | Electra Glide Special FLHX |
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.Product Description
Features
- Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy
- Allow a tighter fit and longer piston and ring life
- Diamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to piston
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Replacement piston rings and pin lock rings available separately
- KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.
- Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
Specs
| Units | Kit |
| Riding Style | Street |
| Product Name | Piston Kit |
| Bore Size | 3.498" |
| Compression Ratio | 8.3:1 |
| Bore Oversize | +0.040" |
| Piston Material | Hypereutectic Alloy |
| 1978-1984 | Harley-Davidson | Electra Glide FLH |
| 1979-1980 | Harley-Davidson | 1200 Electra Glide FLH |
| 1979-1981 | Harley-Davidson | 1200 Fat Bob FXEF |
| 1979-1982 | Harley-Davidson | Low Rider FXS |
| 1979-1980 | Harley-Davidson | Super Glide 80 FXE |
| 1980-1982 | Harley-Davidson | Electra Glide Sport FLHS |
| 1980-1982 | Harley-Davidson | Sturgis FXB |
| 1980-1983 | Harley-Davidson | Tour Glide Classic FLTC |
| 1980-1983 | Harley-Davidson | Tour Glide FLT |
| 1980-1984 | Harley-Davidson | Wide Glide FXWG |
| 1981-1982 | Harley-Davidson | Electra Glide Classic FLH |
| 1981 | Harley-Davidson | Electra Glide Heritage FLH |
| 1981-1984 | Harley-Davidson | Super Glide FXE |
| 1982-1983 | Harley-Davidson | Super Glide II FXR |
| 1982-1983 | Harley-Davidson | Super Glide II FXRS |
| 1983 | Harley-Davidson | Disc Glide FXDG |
| 1983 | Harley-Davidson | Electra Glide Classic FLHTC |
| 1983 | Harley-Davidson | Electra Glide Standard FLHT |
| 1983-1984 | Harley-Davidson | Low Rider FXSB |
| 1983 | Harley-Davidson | Sport Glide FXRT |
| 1984 | Harley-Davidson | Electra Glide Special FLHX |
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.Part Numbers
| Store SKU | MFR. Product # | Availability |
|---|---|---|
| DS-751263 | KB297.040 | In Stock |
Fitment
This product is vehicle specific.
Select your vehicle to confirm fitment.
This Product Fits
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Customer Reviews
KB Performance Hypereutectic Piston Kit 3.498" +0.040" 8....
Regular price
$246.95
Unit price
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